Abstract
Increase of the current density is one of the most important topics in the development of solid oxide fuel cells. In this study we focus on the possibility of the current density enhancement by controlling the mesoscale structure of the anode electrode. Such structures increase the area of electrolyte-electrode interface and the volume of anode electrode, reduce the electrolyte thickness, affect gas diffusion in the porous electrode and consequently influence the cell performance. To evaluate its effect on the cell performance, two-dimensional numerical simulation is conducted. By comparing the numerical results of the mesoscale controlled anode with a standard one, it is found that the mesoscale structure enhances the cell power generation performance. The distribution of local electrochemical reaction rate in the anode shows that the most reaction takes place in the vicinity of the electrolyte-electrode interface.
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